In the nitrogen cycle, the bacteria that replenish the atmosphere with nitrogen are _____
A) Rhizobium bacteria
B) nitrifying bacteria
C) denitrifying bacteria
D) methanogenic protozoans
E) nitrogen-fixing bacteria
Answer: C
Biology & Microbiology
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Viruses in the extracellular state possess few, if any, active enzymes.
Answer the following statement true (T) or false (F)
Biology & Microbiology
The phenotypic trait that selection acts upon directly is referred to as the ________ of selection
Fill in the blank(s) with correct word
Biology & Microbiology
Solar equator
What will be an ideal response?
Biology & Microbiology
Spiders breathe by means of
a. Gills b. Diffusion across the soft cuticle c. An extensive system of tracheae more complex than is found in insects d. Book lungs or primitive tracheae e. Coxal glands
Biology & Microbiology